dispersion n. 1.分散,散开;散布,传播;离散。 2.【物理学】弥散,色散;【化学】分散作用;被分散物;分散相,分散体系;【医学】(炎症等的)消散;【统计学】离中趋势。 3.〔the D-〕 (犹太人的)离散异邦。 the dispersion of heat 热的扩散。 the dispersion of an assembly 集会的解散。 dispersion on the ground 炮弹在地面上的散布。
pulse n. 1.脉搏;有节奏的跳动;【动物;动物学】脉冲(波);脉动。 2.意向;倾向。 3.【音乐】拍子,律动。 His pulse was at a hundred. 他的脉搏(每分钟)一百次。 a galloping pulse 急脉。 a high pulse 强脉。 a long [ slow ] pulse 缓脉。 a weak pulse 弱脉。 an action pulse (火箭)触发脉冲。 a carry pulse 进位脉冲。 a driving pulse 起动脉冲。 feel sb.'s pulse =have one's fingers on the pulse of sb. 按某人的脉;探某人的意向。 stir sb.'s pulses 鼓动某人的情绪;使人兴奋。 with quickened pulses 心跳得更快地。 vi. 脉跳动;震动;脉动。 vt. 使发生脉冲;用脉冲输送(血等) (in out)。 n. 〔sing., pl. 〕 豆类;豆。
These are mixed - excitation , aperiodic pulses , pulse dispersion , and adaptive spectral enhancement . so the melp vocoder can produce more natural sounding speech . with a analysis to melp coding arithmetic , a speech codec scheme in software is presented in this paper 本论文在对melp编码算法进行分析的基础上,提出了用软件实现语音信号编解码的方案;然后,基于melp标准,开发了仿真系统,实现对语音信号的编解码。
Melp which can work at the rate of 2 . 4kb / s has been chosen as u . s . federal standard , melp algorithm is on the basis of line prediction ( lp ) . five auxiliary characters has been introduced into melp algorithm , they are mixed excitation , aperiodic pulse , fourier magnitudes pulse dispersion and adaptive spectral filtering 作为一种重要的低速率语音编码算法,美国联邦标准melp算法对lpc - 10编码方案做了大量改进,引入了混合激励,非周期脉冲,残差付氏幅度谱,脉冲散布和自适应谱滤波五个附加特征,在2 . 4kbit / s的速率下取得了比较自然的语音质量。
Melp vocoders utilize mixed pulse and noise as the excitation to elimate the buzzes in traditional lpc vocoders , and add a jitter voicing state to overcome the tonal noise . parameters " interpolation , adaptive spectrum enhancement and pulse dispersion also are adopted to improve the continuity . the synthetic speech of melp vocoders sound much more natural and perceivable than the traditional vocoders " Melp声码器采用混合脉冲和噪声激励解决了经典lpc的嗡嗡声的问题;引入了抖动浊音状态以克服音调噪声;利用参数插值、脉冲散布和自适应谱增强等措施提高合成语音的自然度和可懂度;此外还采用了多带激励,使其具有了比较强的抗背景噪声的性能。